Point at match when a parse failure ocurrs inside of it

2018-10-28 11:41:23 -07:00
parent ea57134607
commit d491734b15
5 changed files with 17 additions and 6 deletions
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -2474,7 +2474,11 @@ impl<'a> Parser<'a> {
                    return Ok(self.mk_expr(lo.to(hi), ex, attrs));
                }
                if self.eat_keyword(keywords::Match) {
-                    return self.parse_match_expr(attrs);
+                    let match_sp = self.prev_span;
+                    return self.parse_match_expr(attrs).map_err(|mut err| {
+                        err.span_label(match_sp, "while parsing this match expression");
+                        err
+                    });
                }
                if self.eat_keyword(keywords::Unsafe) {
                    return self.parse_block_expr(